The Problem of Gauge Invariance in the Current Study of Nucleon Spin |
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| Authors: | Xiang-Song CHEN Fan WANG |
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| Affiliation: | Department of Physics and Center for Theoretical Physics Nanjing University, Nanjing 210093, China |
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| Abstract: | Instead of the popular gauge-dependent decomposition of the total angular momentum operator in QCD, we derived a gauge-invarian t one with better classical correspondence. We also explored the possibility that the requirement of gauge invariance and classical correspondence wiU partly contradict with the commutation relationship of momentum and angular momentum. |
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